Packaging box

ABSTRACT

A packaging box includes an exterior unit and a packaging component that is set in the exterior unit. The packaging component includes an article mounting plane unit that mounts an article on, and a pair of downward-bent units that is bent downward from the front end and the rear end of the article mounting plane unit with respect to the side on which the article is mounted. A film for covering and holding the article is adhered to the pair of downward-bent units. The pair of downward-bent units include an outward-bent unit that is provided outside the downward-bent units, and that is bent with respect to the downward-bent units.

CROSS-REFERENCE TO RELATED APPLICATION

This application is based upon and claims the benefit of priority of the prior Japanese Patent Application No. 2011-178637 filed on Aug. 17, 2011, the entire contents of which are incorporated herein by reference.

FIELD

The embodiments discussed herein are related to a packaging box used for packaging articles.

BACKGROUND

Conventionally, a packaging component set in a packaging box to hold an article using a film or the like has been known.

A packaging component including upper and lower films for holding an article and a block for adjusting the tension of the films is known.

Also known is a packaging component including an article mounting plane unit on which an article is mounted, a film for holding an article mounted on the article mounting plane unit, and a side piece for supporting the article mounting plane unit at the lower end.

Additionally known is a packaging component including an article mounting plane unit to mount an article on, a film for holding an article mounted on the article mounting plane unit, leg units bent downward perpendicularly from both ends of the article mounting plane unit, and a bottom portion bent inward from the leg units perpendicularly in parallel to the article mounting plane unit.

Patent Document 1: Japanese Laid-open Patent Publication No. 2001-225873

Patent Document 2: Japanese Utility Model Registration Publication No. 3146554

Patent Document 3: Japanese Laid-open Patent Publication No. 2006-248549

SUMMARY

According to an aspect of the embodiments, a packaging box includes an exterior unit, and packaging component that is set in the exterior unit. The above packaging components include an article mounting plane unit that mounts an article on, and a pair of downward-bent units that is bent downward from the front end and the rear end of the article mounting plane unit with respect to the side on which the article is mounted. A film for covering and holding the article is adhered to the pair of downward-bent units. The pair of downward-bent units includes an outward-bent unit that is provided outside the downward-bent units, and that is bent with respect to the downward-bent units.

The object and advantages of the invention will be realized and attained by means of the elements and combinations particularly pointed out in the claims.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention as claimed.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a front perspective view illustrating an internal configuration of a packaging box according to a first embodiment;

FIG. 2A is a sectional view (1) along line II-II in FIG. 1;

FIG. 2B is a sectional view (2) along line II-II in FIG. 1;

FIG. 3 is a development view illustrating a packaging component according to the first embodiment;

FIG. 4 is a plan perspective view illustrating the packaging box with a top plane unit of an exterior unit in an open state according to the first embodiment;

FIG. 5A is a list illustrating a drop test result of a packaging box according to the first embodiment;

FIG. 5B is a list illustrating a drop test result of a packaging box according to a comparison example;

FIG. 6 is a development view illustrating a packaging component according to the second embodiment;

FIG. 7 is a development view illustrating a packaging component according to the third embodiment;

FIG. 8 is a sectional view illustrating a packaging box according to the third embodiment;

FIG. 9 is a development view illustrating a packaging component according to the fourth embodiment;

FIG. 10 is a sectional view illustrating a packaging box according to the fourth embodiment;

FIG. 11 is a plan perspective view illustrating the packaging box with the top plane unit of the exterior unit kept in an open state according to the fifth embodiment;

FIG. 12A is a sectional view (1) illustrating a packaging box according to the fifth embodiment;

FIG. 12B is a sectional view (2) illustrating a packaging box according to the fifth embodiment; and

FIG. 13 is a development view illustrating a holding component according to the fifth embodiment.

DESCRIPTION OF EMBODIMENTS

The above-mentioned packaging component having upper and lower films for holding an article is weak against a free drop impact because the article is held only by the films. In addition, when the films are elastic, the films temporarily move with the article by the impact caused when the packaging box drops, and the article touches the inside of the wall of the exterior unit, thereby applying a large impact to the article. Furthermore, since a block for adjusting the tension of the films and a member for supporting the block are arranged, the structure of the packaging component is complicated.

When the packaging component includes the article mounting plane unit and the films, and the films are elastic, the films temporarily move with the article by the impact caused when the packaging box drops, and the article touches the inside of the wall of the exterior unit, thereby applying a large impact to the article. Furthermore, since the article returns to the original position by the reaction to the extended films, a large impact is applied to the article.

Furthermore, to firmly hold an article, proper tension is to be applied to the films. When articles in various sizes are to be held, it is preferably to prepare films large enough to hold a large article.

The packaging box according to an embodiment of the present invention is described below with reference to the attached drawings.

First Embodiment

FIG. 1 is a front perspective view illustrating an internal configuration of a packaging box 1 according to a first embodiment.

FIGS. 2A and 2B are sectional views along line II-II in FIG. 1.

FIG. 3 is a development view illustrating a packaging component 10 according to the first embodiment.

FIG. 4A is a plan perspective view illustrating the packaging box 1 (with a top plane unit 25 of exterior unit 20 in an open state) according to the first embodiment.

As illustrated in FIGS. 1 and 2, the packaging box 1 includes a packaging component 10 provided with outward-bent units 16 g and 17 g, and an exterior unit 20. The packaging component 10 includes an article mounting plane unit 11, a pair of suspending units 12 and 13, a pair of side plane units 14 and 15, and a pair of downward-bent units 16 and 17, and is set in the exterior unit 20. The packaging component 10 is made of a single base board such as, for example, a corrugated cardboard.

The exterior unit 20 includes a left plane unit 21, a back plane unit 22, a right plane unit 23, and a front plane unit 24, a top plane unit 25, and a bottom plane unit 26, and the top plane unit 25 functions as, for example, a cover which can be freely opened and closed. The terms top, bottom, right, and left refer to the positions illustrated in FIG. 1. The front and back illustrated in FIG. 1 refer to the positions in the depth direction in FIG. 1. The article mounting plane unit 11 has a rectangular shape that is, for example, longer in the lateral direction than in the front-back direction in FIG. 1, and is kept horizontally in the exterior unit 20. On the top plane of the article mounting plane unit 11, which serves as the article mounting plane, an article 100 such as an electronic device is mounted.

The article 100 is held on the article mounting plane unit 11 by being covered by, for example, elastic film F represented by the chain double-dashed line. Film F has both its ends adhered to adherence areas 16 f and 17 f formed on the inner sides of the downward-bent units 16 and 17 of the packaging component 10, which will be described later. In FIG. 3, dashed lines with a symbol “M” represent convex folds, dashed lines with a symbol “V” represent concave folds, and solid lines with a symbol “C” represent lines along which cuts will be made. As illustrated in FIG. 1, there are interspaces S1 and S2 between the top plane unit 25 and the article 100, and between the bottom plane unit 26 and the article 100 (bottom of the article mounting plane unit 11), respectively, so that the article 100 does not touch the exterior unit 20 even when a high impact is applied from above or below (by dropping, for example) to the packaging box 1.

As illustrated in FIG. 4, with the packaging component 10 accommodated in the exterior unit 20, the front-end side and the rear-end side of the article mounting plane unit 11 are positioned with the interspaces S3 and S4 with respect to the exterior unit 20. As illustrated in FIG. 1, the pair of suspending units 12 and 13 are bent upward from the left end or the right end of the article mounting plane unit 11 at the position of the concave fold V illustrated in FIG. 3, and suspend the article mounting plane unit 11 with a pair of side plane units 14 and 15 described later. The angle θ between the pair of suspending units 12 and 13 and the article mounting plane unit 11 is, for example, a right angle or obtuse angle.

Through holes 12 a and 13 a are formed on the pair of suspending units 12 and 13 so that fingers can be inserted into them when the packaging component 10 is to be removed. These through holes 12 a and 13 a are in communication with through holes 14 a and 15 a on the pair of side plane units 14 and 15 that will be described later.

As illustrated in FIGS. 1 and 2B, the suspending units 12 and 13 include small width units 12 b and 13 b at the lower part that are continuous to the article mounting plane unit 11, and include large width units 12 c and 13 c, wider than the small width units 12 b and 13 b, at the upper part of the suspending units 12 and 13 continuous to the side plane units 14 and 15

The width of the small width units 12 b and 13 b (the front-back dimension) is equal, at the lower ends of the small width units 12 b and 13 b, to the dimension of the article mounting plane unit 11 in the front-back direction, and becomes smaller in width as the distances on the units to the large width units 12 c and 13 c (see FIGS. 1, 2A, and 2B) decreases. The dimension of the large width units 12 c and 13 c in the front-back direction is almost fixed, and is greater than the dimension of the article mounting plane unit 11 in the front-back direction, and is equal to the dimension of the side plane units 14 and 15 in the front-back direction.

The side plane units 14 and 15 are bent downward and outward from the upper end of the suspending units 12 and 13, that is, to the sides opposite from the article mounting plane unit 11 at the position of the convex folds M. Also, when the packaging component 10 is accommodated in the exterior unit 20, the side plane units 14 and 15 are kept in surface contact with the left plane unit 21 and the right plane unit 23 of the exterior unit 20 (examples of two opposite walls).

As illustrated in FIG. 3, when the packaging component 10 is formed by corrugated cardboards etc., it is preferable that its card row (corrugation) extends in the direction parallel to the fold (concave fold V) between the suspending units 12 and 13 and the article mounting plane unit 11, and the fold (convex fold M) between the side plane units 14 and 15 and the suspending units 12 and 13. However, depending on the condition of strength, it may be preferable that the card row 10 a extends in the direction perpendicular diagonal to the fold (concave fold V, convex fold M).

Width W, depth L, and height H of the packaging component 10 illustrated in FIG. 1 are identical or almost identical (a few millimeters smaller for example) to those of the inner dimensions of the exterior unit 20. With the dimensions of the packaging component 10, the packaging component 10 accommodated in the exterior unit 20 does not shake easily.

The pair of side plane units 14 and 15 are positioned by the above dimensional relationships, especially by width W of the packaging component 10, and are kept in surface contact with the left plane unit 21 and the right plane unit 23.

The depth and the height of the pair of side plane units 14 and 15 in the accommodated state in the exterior unit 20 are identical or almost identical to the depth L and the height H of the packaging component 10, that is, the depth and the height in the internal dimensions of the exterior unit 20 as illustrated in FIG. 1. Therefore, the pair of the side plane units 14 and 15 touches the bottom plane unit 26, the front plane unit 24, and the back plane unit 22 of the exterior unit 20, thereby suppressing the shake.

If the height H of the side plane units 14 and 15 is larger than the inner dimensions of the exterior unit 20, the top plane unit 25 and the bottom plane unit 26 of the exterior unit 20 squeeze the side plane units 14 and 15, thereby making the upper ends of the side plane units 14 and 15 firmly touch the exterior unit 20, and increasing the compression strength of the packaging box 1.

Although it is preferable that the depth and the height of the side plane units 14 and 15 are identical or almost identical to the depth and the height of the inner dimensions of the exterior unit 20, it is also possible to make them smaller than the inner dimensions of the 20 to allow the packaging component 10 in the exterior unit 20 vertically or horizontally to a certain extent. The order in which the propagation of the impact force to the article 100 (propagation speed) can also be adjusted by adjusting the dimensions among the side plane units 14 and 15, the downward-bent units 16 and 17, and the exterior unit 20.

The left plane unit 21 and the right plane unit 23 of the exterior unit 20 are parallel to each other. The side plane units 14 and 15 are perpendicularly bent downward from the upper ends of the suspending units 12 and 13.

As illustrated in FIGS. 1, 2A, and 2B, the pair of downward-bent units 16 and 17 are bent diagonally below from the front and rear ends of the article mounting plane unit 11 in the direction in which they approach each other at the position of the convex fold M drawn horizontally as illustrated in FIG. 3. As illustrated in FIG. 3, the downward-bent units 16 and 17 include body units 16 a and 17 a, left substantially triangle units 16 b and 17 b, right substantially triangle units 16 c and 17 c, left end units 16 d and 17 d, right end units 16 e and 17 e, adherence areas 16 f and 17 f, and outward-bent units 16 g and 17 g. The horizontal dimensions of the body units 16 a and 17 a are identical to the horizontal dimensions of the article mounting plane unit 11 at the upper end, and become smaller downward therefrom.

The left substantially triangle units 16 b and 17 b, and the right substantially triangle units 16 c and 17 c are substantially triangular, and are bent diagonally upward at the position of the convex folds M between the body units 16 a and 17 a and the left substantially triangle units 16 b and 17 b in such a manner that they get further from each other from the left and right ends of the body units 16 a and 17 a.

The left end units 16 d and 17 d are bent upward at the position of the convex fold M between the left substantially triangle units 16 b and 17 b. Similarly, the right end units 16 e and 17 e are bent upward at the convex fold M between the right substantially triangle units 16 c and 17 c. The left end units 16 d and 17 d and the right end units 16 e and 17 e in the bent state are inserted between the suspending units 12 and 13 and the side plane units 14 and 15. The left end units 16 d and 17 d and the right end units 16 e and 17 e are also bent at the position of the convex fold M between the suspending units 12 and 13.

The outward-bent units 16 g and 17 g are bent at the position of the concave fold V between the body units 16 a and 17 a outward from the body units 16 a and 17 a of the downward-bent units 16 and 17, that is, forward the downward-bent unit 16 on the front end side and backward the downward-bent unit 17 on the rear end side.

As illustrated in FIGS. 2A and 2B and FIG. 3, the film

F is adhered on the inner side of the outward-bent units 16 g and 17 g. The film F can be loose between the front and rear ends of the article mounting plane unit 11 or the article 100 and the lower end of the outward-bent units 16 g and 17 g. Therefore, the looseness of the film F can be adjusted by the angle of bending the outward-bent units 16 g and 17 g or of the outward-bent units 16 g and 17 g bending themselves. The film F is adhered in the state in which the packaging component 10 is developed as illustrated in FIG. 3.

As illustrated in FIG. 2B, the outward-bent units 16 g and 17 g can be set in the state (P0) in which they are parallel with the body units 16 a and 17 a of the downward-bent units 16 and 17 and different states (P1, P2) in which they have different bending angles with the body units 16 a and 17 a. When the mounted article 100 is relatively small, the bending angle between the body units 16 a and 17 a and the outward-bent units 16 g and 17 g can be made large as illustrated in FIG. 2A when the article is mounted. On the other hand, when the mounted article 100 is relatively large, the bending angle between the body units 16 a and 17 a and the outward-bent units 16 g and 17 g can be made small as illustrated in FIG. 2B when the article is mounted.

Then, by re-adjusting the bending angle between the body units 16 a and 17 a and the outward-bent units 16 g and 17 g so that the film F can be tight, the film F can be appropriately tight regardless of the size of the article to be mounted.

When the looseness of the film F is adjusted, the bending angle between the downward-bent units 16 and 17 and the article mounting plane unit 11 can be adjusted by bending the downward-bent units 16 and 17 with respect to the article mounting plane unit 11.

The outward-bent units 16 g and 17 g is positioned at the lower ends of the downward-bent units 16 and 17. In the state illustrated in FIG. 2A or 2B, the outward-bent units 16 g and 17 g can be bent so that they do not touch the bottom plane unit 26 of the exterior unit 20, but they can touch the bottom plane unit 26.

The test about the shock absorbing performance of the packaging box 1 can be conducted by performing a free drop test (for example, JIS Z 0200) from the height of 80 cm on the angle 1, ridge 2, and plane 6 of the packaging box 1 when a package of 10 kg or less is used. FIG. 5 is an example of the result of the drop test.

FIG. 5A is a list illustrating a drop test result of a packaging box according to the present embodiment. In this drop test, the weight of the article 100 is 1.0 kg. In the example of FIG. 5A, to conduct the drop test, the direction of the drop of the packaging box is defined by ten elements of (1) angle, (2) short ridge consecutive to the angle, (3) middle ridge, (4) long ridge, (5) front plane, (6) rear plane, (7) left plane, (8) right plane, (9) bottom plane, and (10) top plane.

As a result of the drop test, the shock applied to the packaging box according to the present embodiment is 57.84 [G] as the maximum value.

On the other hand, FIG. 5B is a list illustrating a drop test result of a packaging box according to a comparison example. In FIG. 5B, using a packaging component of similar dimensions having: an article mounting plane unit on which an article is mounted; leg units bent perpendicularly downward from both ends of the article mounting plane unit; and a bottom unit bent perpendicularly from the leg units and inward in parallel to the article mounting plane unit, a test is conducted under the conditions similar to those in FIG. 5A. The result is the maximum value of 133.7 [G] of the applied shock.

Thus, with the packaging component 10 according to the present embodiment, it is known that the shock absorbing function can be enhanced by the suspending units 12 and 13, the side plane units 14 and 15, etc.

Although the exterior unit 20 is simply illustrated in FIGS. 1, 2A, and 2B, the left plane unit 21, the right plane unit 23 (examples of two opposite walls), and the front plane unit 24 are duplex.

Practically, the left plane unit 21 includes an outer surface unit 21 a and an inner surface unit 21 b bent downward from the upper end of the outer surface unit 21 a. The right plane unit 23 also includes an inner surface unit 23 b. The front plane unit 24 similarly includes an outer surface unit 24 a and an inner surface unit 24 b.

Between the left plane unit 21 and the front plane unit 24, and between the right plane unit 23 and the front plane unit 24, a space as a guide unit G into which the pair of side plane units 14 and 15 are inserted is formed. The side plane units 14 and 15 are not only positioned in the exterior unit 20 by the dimensions (especially the width W) of the packaging component 10, but also positioned by the guide unit G, and kept in surface contact with the left plane unit 21 and the right plane unit 23.

As illustrated in FIG. 4, an insertion base end unit 24 c in a trapezoidal shape with the right and left sides cut is formed at the center of the outer surface unit 24 a of the front plane unit 24. This insertion base end unit 24 c has its base bent outward, that is, toward the front side).

At the tip of the insertion base end unit 24 c, an insertion tip unit 24 d bent inward the exterior unit 20 is formed. A convex portion (not illustrated in FIG. 4) of the top plane unit 25 is inserted into an insertion port 24 f formed at the inward bent part between the outer surface unit 24 a and the inner surface unit 24 b. An insertion port is formed at the convex portion of the top plane unit 25, and the insertion tip unit 24 d is inserted into the insertion port.

At the center of the upper end of the insertion base end unit 24 c, a semicircular knob unit 24 e is formed. In this knob unit 24 e, the top end as the bent part between the insertion base end unit 24 c and the insertion tip unit 24 d is linear, and cuts are made along the arc, and the circular portion projects outward (to the front side) opposite to the bending of the insertion tip unit 24 d.

When the article 100 is taken out of the packaging box 1, the insertion tip unit 24 d of the front plane unit 24 is extracted from the convex portion of the top plane unit 25 by pulling the semicircular knob unit 24 e of the front plane unit 24 illustrated in FIG. 4 by a human hand. Then, the convex portion of the top plane unit 25 is extracted from the insertion port 24 f of the front plane unit 24.

Next, when an object packaged together such as a document etc. is accumulated above the article 100, it is extracted first. Then, the packaging component 10 is extracted from the exterior unit 20 by lifting the packaging component 10 with human fingers inserted into the through holes 12 a and 13 a of the suspending units 12 and 13 and the through holes 14 a and 15 a of the side plane units 14 and 15.

Then, the packaging component 10 is developed flat as illustrated in FIG. 3 by expanding the lower ends of the side plane units 14 and 15 and expanding the lower ends of the downward-bent units 16 and 17 farther from each other. Thus, the tension of the film F is released, thereby allowing the article 100 to be extracted.

In the first embodiment described above, the packaging component 10 of the packaging box 1 includes a pair of downward-bent units 16 and 17 bent downward from the front end and the rear end of the article mounting plane unit 11 toward the side on which the article 100 is mounted. The film F for covering and holding the article 100 article 100 is adhered to the downward-bent units 16 and 17. In addition, the downward-bent units 16 and 17 include the outward-bent units 16 g and 17 g bent outward from the downward-bent units. Therefore, the bending of the film F is adjusted by bending the outward-bent units 16 g and 17 g.

Therefore, according to the present embodiment, the looseness of the film F for holding the article 100 with respect to the article mounting plane unit 11 can be adjusted with a simple configuration.

As illustrated in FIG. 2A, the downward-bent units 16 and 17 are bent diagonally downward in the direction in which they become closer to each other from the front and rear ends of the article mounting plane unit 11. Therefore, the bending of the film F can be more easily adjusted by adjusting the length of the outward-bent units 16 g and 17 g. Then, although the downward-bent units 16 and 17 contact the bottom plane unit 26 of the exterior unit 20 by drop impact, the outward-bent units 16 g and 17 g prevent the downward-bent units 16 and 17 from being broken by the bending, and can disperse the upward perpendicular impact force.

As means for absorbing the drop impact on the bottom plane, there is a method of additionally using a shock absorbing member 70 (for example, a general-purpose shock absorbing member including plural foaming members in a bag) between the outward-bent units 16 g and 17 g and the bottom plane unit 26 of the exterior unit 20 as illustrated in FIG. 2B.

According to the present embodiment, the packaging component 10 includes a pair of suspending units 12 and 13 bent upward from the left and right ends of the article mounting plane unit 11 for lifting the article mounting plane unit 11, and a pair of side plane units 14 and 15 bent downward from the upper ends of the pair of suspending units. The side plane units 14 and 15 are held in surface contact with the two opposite walls (left plane unit 21 and right plane unit 23) of the exterior unit 20. Therefore, the suspending units 12 and 13 can be firmly supported by the pair of side plane units 14 and 15 in surface contact with the left plane unit 21 and the right plane unit 23 of the exterior unit 20.

Therefore, the shock absorbing performance of the packaging box 1 can be enhanced by a simple configuration of the packaging component 10 and the exterior unit 20 only. Then, the corrugated cardboard and the film material used for the packaging box 1 can be thinner and the exterior unit 20 can be smaller. Furthermore, depending on the presence/absence of the outward-bent units 16 g and 17 g, products of different size can share one packaging box.

Second Embodiment

FIG. 6 is a development view illustrating a packaging component 2 according to the second embodiment. Although it is preferable that the card row (corrugation) 10 a extends parallel to the direction of the fold (concave fold V) between the suspending units 12 and 13 and the article mounting plane unit 11, and the fold (convex fold M) between the side plane units 14 and 15 and the suspending units 12 and 13, it may be preferable that the fold extends in the direction perpendicular or diagonal to the folds (concave fold V and convex fold M) depending on the strength condition.

As illustrated in FIG. 6 according to the present embodiment, a plurality of folds (V11 through V14, V21 through V24) of the outward-bent units 16 g and 17 g are formed in the downward-bent units 16 and 17. Therefore, depending on the size of the product to be mounted, appropriate outward-bent units 16 g and 17 g are selected, and the looseness of the film F can be adjusted. It is preferable that the folds (V11 through V14, V21 through V24) are parallel to one another.

For example, different articles (in circumference of the article 100 to be inserted) are to be packed, the enough looseness can be maintained for the film F by using different folds (V11 through V14, V21 through V24).

By the looseness of the film F, the width (space for the film F) through which the article 100 is inserted can be arbitrarily changed. The plane bent on the folds (V11 through V14, V21 through V14) are outward-bent units 16 g and 17 g, a joint with the film F is positioned at the tip of the outward-bent units 16 g and 17 g, and a concave fold is provided for the boundary (plural folds (V11 through V14, V21 through V24)) between the downward-bent units 16 and 17 and the outward-bent units 16 g and 17 g.

The concave fold is made in “<” shape in the direction in which a pair of outward-bent units 16 g and 17 g are opened outward by the force which strains the film F by inserting the article 100 into the film F.

The film F in which the outward-bent units 16 g and 17 g are bent in the “<” shape is connected by a straight line from the joint area at the tip of the outward-bent units 16 g and 17 g to the boundary angle between the downward-bent units 16 and 17 and the article mounting plane unit 11 off the plane of the outward-bent units 16 g and 17 g.

By the effect above, the downward-bent units 16 and 17, the outward-bent units 16 g and 17 g, and the film F form a section of a triangle, the excessively redundant length of the film generates looseness, thereby generating space between the film and the 2.

Depending on the circumference of the article 100, the position of the fold (V11 through V14, V21 through V24) is selected and the size of the space is changed, thereby arbitrarily changing the value of the looseness of the film F. According to the present embodiment, the tips of the outward-bent units 16 g and 17 g are enrolled, and the film F is adhered to the reverse of the adherence areas 16 f and 17 f. Therefore, the film F can be loose between the outward-bent units 16 g and 17 g and the article mounting plane unit 11, or between the outward-bent units 16 g and 17 g and the article 100, thereby adjusting the looseness of the film F.

Third Embodiment

FIG. 7 is a development view illustrating a packaging component 30 according to the third embodiment. Although it is preferable that the card row (corrugation) 10 a extends parallel to the direction of the fold (concave fold V) between the suspending units 12 and 13 and the article mounting plane unit 11, and the fold (convex fold M) between the side plane units 14 and 15 and the suspending units 12 and 13, it may be preferable that the fold extends in the direction perpendicular or diagonal to the folds (concave fold V and convex fold M) depending on the strength condition.

FIG. 8 is a sectional view illustrating a packaging box according to the third embodiment.

According to the present embodiment, a pair of downward-bent units 36 and 37 are different from the first embodiment. Therefore, the common components are assigned identical reference numerals, and the explanation is omitted here.

The pair of downward-bent units 36 and 37 include body units 36 a and 37 a, left substantially triangle units 36 b and 37 b, right substantially triangle units 36 c and 37 c, left end units 36 d and 37 d, right end units 36 e and 37 e, and outward-bent units 36 g and 37 g.

The downward-bent units 36 and 37 further includes adherence areas 36 f and 37 f and inward-bent units 36 h and 37 h.

The inward-bent units 36 h and 37 h are bent at the position of the convex fold M with respect to the outward-bent units 36 g and 37 g from the tips of the outward-bent units 36 g and 37 g to the opposite side of the outward-bent units 36 g and 37 g.

The adherence areas 36 f and 37 f on which the film F is adhered are provided on the outside of the inward-bent units 36 h and 37 h.

Depending on not only the bending angle of the outward-bent units 36 g and 37 g, but also the bending angle of the inward-bent units 36 h and 37 h, the looseness of the film F is adjusted.

According to the third embodiment described above, the looseness of the film F for holding the article 100 with respect to the article mounting plane unit 11 can be adjusted with a simple configuration.

In addition, according to the present embodiment, a pair of downward-bent units 36 and 37 include the inward-bent units 36 h and 37 h bent from the outward-bent units 36 g and 37 g to the reverse side of the outward-bent units 36 g and 37 g. Therefore, the looseness of the film F can be adjusted.

According to the present embodiment, film F is adhered to the outside of the inward-bent units 36 h and 37 h (adherence areas 36 f and 37 f). Therefore, since the film F is positioned on both sides of one of the packaging component 10, the amount of the film F can be reduced as compared with the case in which the film F is adhered to the inside of the downward-bent units 36 and 37, thereby adjusting the looseness of the film F with a simple configuration.

Fourth Embodiment

FIG. 9 is a development view illustrating a packaging component 40 according to the fourth embodiment. Although it is preferable that the card row (corrugation) 10 a extends parallel to the direction of the fold (concave fold V) between the suspending units 12 and 13 and the article mounting plane unit 11, and the fold (convex fold M) between the side plane units 14 and 15 and the suspending units 12 and 13, it may be preferable that the fold extends in the direction perpendicular or diagonal to the folds (concave fold V and convex fold M) depending on the strength condition.

FIG. 10 is a sectional view illustrating a packaging box according to the fourth embodiment.

According to the present embodiment, a pair of downward-bent units 46 and 47 are different from the first embodiment. Therefore, the common components are assigned identical reference numerals, and the explanation is omitted here.

The pair of downward-bent units 46 and 47 include body units 46 a and 47 a, left substantially triangle units 46 b and 47 b, right substantially triangle units 46 c and 47 c, left end units 46 d and 47 d, right end units 46 e and 47 e, adherence areas 46 f and 47 f, and outward-bent units 46 g and 47 g.

A pair of downward-bent units 46 and 47 include angle regulative bending pieces 46 i, 46 j, 47 i, and 47 j. The angle regulative bending pieces 46 i, 46 j, 47 i, and 47 j are formed by being bent from both ends of the body units 46 a and 47 a toward the article mounting plane unit 11 at the position of the convex fold M with respect to the body units 46 a and 47 a.

Then, the angle regulative bending pieces 46 i, 46 j, 47 i, and 47 j regulate the bending angle of the downward-bent units 46 and 47 so that the bending angle of the body units 46 a and 47 a of the downward-bent units 46 and 47 does not fall below a specified value.

FIG. 10 illustrates the state in which the angle regulative bending pieces 46 i, 46 j, 47 i, and 47 j regulate the bending angle of the downward-bent units 46 and 47. The angle regulative bending pieces 46 i, 46 j, 47 i, and 47 j bent upward from the body units 46 a and 47 a as illustrated in FIG. 10 touches the reverse of the article mounting plane unit 11. Thus, the bending angle of the body with respect to the article mounting plane unit 11 is regulated.

The angle regulative bending pieces 46 i, 46 j, 47 i, and 47 j can be formed by notching the downward-bent units 46 and 47, or can be formed by notching the article mounting plane unit 11.

Also according to the fourth embodiment described above, the looseness of the film F for holding the article 100 with respect to the article mounting plane unit 11 can be adjusted with a simple configuration.

The packaging component according to the present embodiment includes the angle regulative bending pieces 46 i, 46 j, 47 i, and 47 j for regulating the bending angle of a pair of downward-bent units 46 and 47. Therefore, the looseness of the film F can be adjusted.

In addition, according to the present embodiment, the angle regulative bending pieces 46 i, 46 j, 47 i, and 47 j are formed by being bent from the downward-bent units 46 and 47 toward the article mounting plane unit 11. Therefore, the looseness of the film F can be adjusted with a simple configuration.

Fifth Embodiment

FIG. 11 is a plan perspective view illustrating the packaging box 51 with the top plane unit 25 of the exterior unit 20 kept in an open state according to the fifth embodiment.

FIGS. 12A and 12B are sectional views illustrating a packaging box 51 according to the fifth embodiment.

FIG. 13 is a development view illustrating a holding component 52 according to the fifth embodiment.

The present embodiment is different from the first embodiment in that the packaging box 51 includes the holding component 52 in addition to the packaging component 10 according to the first embodiment. Therefore, the common components are assigned identical reference numerals, and the explanation is omitted here.

The holding component 52 includes a plane unit 52 a parallel to the article mounting plane unit 11 in the state in which the unit is accommodated in an exterior unit, rising units 52 b and 52 c, bent units 52 d and 52 e, and a plurality of (four in the present embodiment) convex units 52 f, and arranged between the article 100 and the exterior unit 20. It is not always necessary to prepare a plurality of convex units 52 f.

The rising units 52 b and 52 c are formed to rise perpendicularly from the front and rear ends of the plane unit 52 a. The bent units 52 d and 52 e are bent perpendicularly from the upper ends of the rising units 52 b and 52 c so that the bent units approach each other as illustrated in FIG. 12A.

The bent units 52 d and 52 e can be formed so that they make curved portions with the rising units 52 b and 52 c respectively as illustrated in FIG. 12B. By forming the rising units in the shape as illustrated in FIG. 12B, the shock from the top plane unit 25 can be more effectively absorbed.

The convex unit 52 f is formed by notching the plane unit 52 a, and is bent downward. As illustrated in FIG. 12, the convex unit 52 f holds, for example, the circumference of the article 100. Thus, the holding component 52 can suppress the movement of the article 100 on the article mounting plane unit 11.

According to the fifth embodiment described above, the looseness of the film F for holding the article 100 with respect to the article mounting plane unit 11 can be adjusted with a simple configuration.

According to the present embodiment, the holding component 52 includes the convex unit 52 f formed by a notch in the plane unit 52 a and bent downward. Thus, the shock absorbing performance can be more effectively enhanced with a simple configuration.

As illustrated in FIG. 13, when the holding component 52 is formed by a corrugated cardboard etc., it is preferable that corrugation 52 g of the cardboard extends parallel to the direction of the fold (concave fold V) of the rising units 52 b and 52 c from the plane unit 52 a, and the fold (convex fold M) of the bent units 52 d and 52 e from the rising units 52 b and 52 c, but it may be preferable that the fold extends in the direction perpendicular or diagonal to the folds (concave fold V and convex fold M) depending on the strength condition.

All examples and conditional language recited herein are intended for pedagogical purposes to aid the reader in understanding the invention and the concepts contribute by the inventor to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions, nor does the organization of such examples in the specification relate to a showing of the superiority and inferiority of the invention. Although the embodiments of the present invention have been described in detail, it should be understood that the various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the invention. 

1. A packaging box, comprising: an exterior unit; and a packaging component that is set in the exterior unit, wherein: the packaging component comprises: an article mounting plane unit that mounts an article on; and a pair of downward-bent units that is bent downward from a front end and a rear end of the article mounting plane unit with respect to a side on which the article is mounted; a film for covering and holding the article is adhered to the pair of downward-bent units; and the pair of downward-bent units comprise an outward-bent unit that is provided outside the downward-bent units, and that is bent with respect to the downward-bent units.
 2. The packaging box according to claim 1, wherein the packaging component comprises: a pair of suspending units that is bent upward from a left end and a right end of the article mounting plane unit; and a pair of side plane units that is bend downward from an upper end of the pair of suspending units.
 3. The packaging box according to claim 2, wherein the pair of side plane units is kept in surface-contact with two opposite walls of the exterior unit.
 4. The packaging box according to claim 1, wherein the pair of downward-bent units further comprises an inward-bent unit that is bent from the outward-bent unit in a direction opposite to the outward-bent unit.
 5. The packaging box according to claim 1, wherein a plurality of folds of the outward-bent unit are formed for the pair of downward-bent unit.
 6. The packaging box according to claim 5, wherein the folds are parallel to one another.
 7. The packaging box according to claim 1, further comprising an angle regulative bending piece that regulates a bending angle of the pair of downward-bent units.
 8. The packaging box according to claim 7, wherein the angle regulative bending piece is bent from the downward-bent unit toward the article mounting plane unit.
 9. The packaging box according to claim 1, wherein the downward-bent unit is bent diagonally downward from the front end and the rear end of the article mounting plane unit in a direction of approaching each other.
 10. The packaging box according to claim 1, further comprising a holding component that is arranged at an upper part of the article, wherein the holding component comprises a plane unit that parallel to the article mounting plane unit and a convex unit that is notched in the plane unit and that is bent downward. 